Help With Sub And Port Placement

[kbreudi]

Ok im finally ready to get my build going, got all equipment and the weather is starting to get a little better (as i look out the window and see a blizard lol).....anyway im kinda stuck here on how to face the ports and subs...i know the best would be to put sub and port facing into cabin (rear seats fold down) but i cant do that unless all i want is 80sq" of port area wich is not enough for two 15" MT's....so here are a few options i did a quik sketch with on google

Equipment is in my sig,

all 4 boxes are about 9 cubes after displacment with 140sq" of port at a length of 16" is about 39Hz

Also keep in mind that all four could also be done with aero ports, i just didnt have the time to make ports for all the boxes on sketch up

what i want to know is, what one will be the loudest, all will be in the trunk seeted the same way

Box 1 with subs up to trunk lid and ports into cabin at top

Same thing but with port at bottom

Subs firing into cabin with port up to trunk lid

Subs firing into cabin with ports facing rear of trunk

Here is what the trunk looks like (not my car just a pic i found on the net)

hopefuly you all can get the idea on the boxes

Thanks for the help

Edited March 20, 2008 by kbreudi

[EricM9104]

2nd design, would you be able to face the port side of the box into the cabin? Or would the port be blocked?

[kbreudi]

2nd design, would you be able to face the port side of the box into the cabin? Or would the port be blocked?

i would but i think i mentione din the first post i could only use a max of 80 sq" of port area total , and the mt's like at least 60 sq" each

[kbreudi]

also dont forget i can use aero ports, if it will make any differance

[kbreudi]

bumpy bump! i know there guys out there that can make a trunk setup loud.....amatt any help? i was using your port calc too btw

[Decaf]

~140sqin port, subs up port back

i would think u would have weird cancellation with the subs front wave interacting w/the trunk space/rear deck first and port in cabin first

so 2nd design but turn it around........ unless you plan on walling it..!!??!!

[kbreudi]

~140sqin port, subs up port back

i would think u would have weird cancellation with the subs front wave interacting w/the trunk space/rear deck first and port in cabin first

so 2nd design but turn it around........ unless you plan on walling it..!!??!!

would wall it but its a daily driver and i kinda need the back seats lol.

so subs up port back like crx style? How much space should ther ebe between the port and the rear of the trunk?

[PaulO2288]

The second design is a good design. Subs up and port fireing into the cabin works really well!

[kbreudi]

The second design is a good design. Subs up and port fireing into the cabin works really well!

but will it be louder that what decaf said and fire port against trunk wall???? Se since this box is so big and takes up all of the trunk, if the port was firing to the back of the trunk there isent too much room for the air and wave to get into the cabin...thats why i was thinking design two as well

[Decaf]

well ud need at least 4-5", if you dont have it then yeah, 2nd design will work, it will sound better the other way cause im guessing the phases will be closer to eachother then port in cabin....

we wont know til u try!